AM.I.A.K18
KnowledgeControlling devices, including switches and relays.
From the FAA library
- Chapter 12: Fundamentals of Electricity & Electronics › Switches
switch, or a relay, or both may be included in the circuit for this purpose. Figure 12-68. Schematic symbol for circuit breaker. Switches Switches control the current flow in most aircraft electrical circuits. A switch is used to start ... definitions of the switch is necessary before any of the switch types are discussed. The number of poles, throws, and positions they have designates toggle switches, as well as some other type of switches. Pole—the switch’s movable blade…
- Chapter 9: Engine Fire Protection Systems › Engine Fire Detection Systems › Thermal Switch System
devices are available. Many older model aircraft still operating have some type of thermal switch system or thermocouple system. A thermal switch system has one or more lights energized by the aircraft power system and thermal switches that control operation ... tested by pushing it in to check an auxiliary test circuit. The circuit shown in Figure 9-1 includes a test relay. With the relay contact in the position shown, there are two possible paths for current flow from…
- Chapter 12: Fundamentals of Electricity & Electronics › Three-Phase Alternator › Differential Relay Switch
Differential Relay Switch Aircraft electrical systems normally use some type of reverse current relay switch, which acts not only as a reverse current relay cut-out but also serves as a remote control switch by which the generator ... disconnected from the electrical system at any time. One type of reverse current relay switch operates on the voltage level of the generator, but the type most commonly used on large aircraft is the differential relay switch, which is controlled…